Learn the fundamentals of PHP from structural programming to object-oriented techniques.

Web Development with PHP

This highly interactive module introduces us to fundamental programming concepts in PHP—one of the most popular languages in the world. It begins with a simple “Hello, World!” program and proceeds to cover common concepts such as conditional statements, loop statements, and logic in PHP. It then reflects upon the idea of functions and arrays, as well as the power they give to the programmer to write better code.

Finally, it dives deeper into advanced concepts such as classes, inheritance, and exception handling in PHP. By the time we're done, we’ll have a good grip on the basics of PHP and will be ready to study advanced concepts.

Learn PHP from Scratch

As we discussed [earlier](https://www.educative.io/courses/learn-php/variables-and-data-types), an array is like a list of values. The simplest form of an array is indexed by an integer, and ordered by the index, with the first element lying at index 0.

To debug your code while working with arrays, it is very important to view the keys and their associated values. Accessing the length of an array can also be useful on numerous occasions.   
# Outputting a Structured View of Arrays

To print an array in a readable format we use the following: 
```php
print_r($arrayName)
``` 
This will print the keys and their associated values. Run the code below to see how `print_r()` works.


In this lesson. we will learn about printing arrays and finding length of an array.

Getting Started

Variables

Operators

Conditional Statements

Loops

Functions

Strings

Arrays

PHP Assessment 1

Classes and Inheritance

Exception Handling

PHP Assessment 2

Conclusion

Arrays and their Operations